NB: (All the above coins minted from 1965 onward have no silver value, they are made from nickel.)

R1 coins dated 1965-1976.

From 1970-1976 – R1- coins only issued in collectors sets and are worth bullion value.
An easy way to check if your R1 coins are silver is by using a magnet, a fridge magnet will do. If the R1 coins stick to the magnet it is not silver and only worth face value.
I will also buy the silver commemorative series.